Machine head lifting structure of polishing machine

Abstract

The machine head lifting structure of the polishing machine comprises a base, a machine frame is arranged on the base, a guide rail is arranged in the middle of the machine frame, and the guide rail is arranged on the base. A guide rail is arranged on the rack, a workbench is arranged on the guide rail, a swing table is arranged on the workbench, a rotary rubber roller is arranged on the swing table, a polishing wheel is arranged above the rotary rubber roller, the polishing wheel is located over the rotary rubber roller, and the polishing wheel is arranged on the rack; a lower pressing plate is arranged on the side face of the rack, a pressing plate fulcrum hole is formed in the middle of the lower pressing plate, a pressing plate fulcrum shaft is sleeved with the pressing plate fulcrum hole of the lower pressing plate, and the pressing plate fulcrum shaft is fixedly arranged on the rack; an air cylinder is arranged on the base, and a connector is arranged at the end of a piston rod of the air cylinder and connected with one end of the lower pressing plate; a driving base is arranged at the end, away from the connector, of the lower pressing plate, and the end of the lower pressing plate is rotationally connected with the driving base. The polishing device can polish the surface of a slender conical workpiece, so that the surface of a product is flat and smooth, and the polishing precision and smoothness of the surface of the workpiece are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing equipment, in particular to a polishing machine for polishing a billiard cue (or table tennis cue). Background Art

[0002] The polishing machine is a finishing process for the surface of the workpiece, which reduces the surface roughness of the workpiece and makes the workpiece have a bright and smooth surface.

[0003] A pool cue (or table tennis cue) requires a smooth and flat surface to ensure the feel and aesthetics. However, a pool cue has a certain taper, and the cue is thin in the front and thick in the back. The length of a pool cue is generally about 1.3m to 1.5m, and some customized cues are up to 1.8m long. The diameter of the cue head (thin end) is about 9 to 12mm, and the diameter of the grip (back handle) is about 2.7 to 3.3cm. Existing pool cue polishing is mostly done manually, with sandpaper rubbing and polishing on the pool cue repeatedly by hand. The work intensity is high, the efficiency of grinding and polishing is low, and the consistency of smoothness and glossiness is poor, which makes it difficult to meet high-quality requirements. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the purpose of the utility model is to provide a head lifting structure of a polishing machine to meet the needs of multiple polishing of a slender tapered billiard cue from front to back in a reciprocating cycle, improve efficiency and ensure polishing quality.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A polishing machine head lifting structure comprises a base, a frame is arranged on the base, a guide rail is arranged in the middle of the frame, and the guide rail is arranged on the base; a workbench is arranged on the guide rail, a swing table is arranged on the workbench, a rotating rubber roller is arranged on the swing table, a polishing wheel is arranged above the rotating rubber roller, the polishing wheel is located directly above the rotating rubber roller, and the polishing wheel is arranged on the frame;

[0007] A lower pressing plate is provided on the side of the frame, a pressing plate fulcrum hole is provided in the middle of the lower pressing plate, the pressing plate fulcrum hole of the lower pressing plate is sleeved on the pressing plate fulcrum shaft, and the pressing plate fulcrum shaft is fixedly arranged on the frame;

[0008] A cylinder is provided on the base, a connecting head is provided at the end of the piston rod of the cylinder, and the connecting head is connected to one end of the lower pressing plate; a driving seat is provided at the end of the lower pressing plate away from the connecting head, and the end of the lower pressing plate is rotatably connected to the driving seat;

[0009] A longitudinally extending screw rod is arranged on the driving seat, and a lifting seat is arranged on the upper part of the screw rod; a laterally protruding linkage shaft is arranged on the lifting seat, and a swing plate is arranged on the side of the lifting seat close to the linkage shaft, and one end of the swing plate is hingedly connected to the linkage shaft.

[0010] Further, in some embodiments, a head motor is provided on the frame, and the head motor is transmission-connected to the polishing wheel;

[0011] The polishing wheel is provided with a machine head spindle, and both ends of the machine head spindle are provided with spindle bearing seats; a swing arm shaft is provided on the side of the polishing wheel close to the lifting seat, the swing arm shaft is arranged parallel to the machine head spindle, and the swing arm shaft is arranged on the frame;

[0012] A swing arm is provided between the main shaft bearing seat and the swing arm shaft, one end of the swing arm is fixedly connected to the main shaft bearing seat, the other end of the swing arm away from the main shaft bearing seat is rotatably connected to the end of the swing arm shaft, and the swing arm is fixedly connected to the swing plate.

[0013] Further, in some embodiments, the lifting seat is arranged above the driving seat; a fixing plate is arranged on the side of the lifting seat away from the linkage shaft, the fixing plate is arranged longitudinally, and the lifting seat is fixedly connected to one end of the fixing plate;

[0014] A positioning plate parallel to the lifting seat is provided at one end of the fixing plate away from the lifting seat, and the positioning plate is fixedly connected to the lifting seat;

[0015] A lifting and replenishing motor is arranged at one end of the lead screw away from the driving seat. The lifting and replenishing motor is connected to the lead screw through a machine head lifting and reducing gear. The lead screw is arranged through the lifting seat and the positioning plate.

[0016] Further, in some embodiments, swing arm bearing seats are provided at both ends of the swing arm shaft, and the swing arm bearing seats are arranged on the frame; the swing arm shaft is mounted on the frame through the swing arm bearing seats;

[0017] The fixing plates are arranged at a certain interval on the outside of the frame, and the end of the screw rod away from the driving seat passes through the lifting seat and the positioning plate and is connected to the machine head lifting reducer;

[0018] A cylinder seat is arranged at one end of the cylinder away from the connecting head. The cylinder and the cylinder seat are hingedly arranged, and the cylinder seat is arranged on the base.

[0019] Further, in some embodiments, a hinge hole is provided at the end of the lower pressing plate away from the connecting head, and the hinge hole is sleeved on the convex shaft of the driving seat, and the hinge hole is hingedly connected to the convex shaft of the driving seat;

[0020] The pressing plate fulcrum hole on the lower pressing plate is arranged between the connecting head and the hinge hole, and a spacing distance is arranged between the lifting seat and the driving seat;

[0021] The lower pressure plate is an L-shaped swing plate or an arc-shaped plate.

[0022] Furthermore, in some embodiments, the output end of the head lifting reducer is connected to a screw rod, which passes through the positioning plate and the lifting seat and is threadedly connected to the driving seat. The driving seat is set as a screw seat, and the screw rod is connected to the positioning plate and the lifting seat through a bearing.

[0023] Furthermore, in some embodiments, a screw sleeve is provided on the driving seat, the screw sleeve is fixedly connected to the driving seat, the screw rod passes through the positioning plate and the lifting seat and is then sleeved in the screw sleeve, the screw rod is threadedly connected to the screw sleeve, and the screw rod is connected to the positioning plate and the lifting seat through a bearing.

[0024] Further, in some embodiments, a rack parallel to the guide rail is provided on the side of the workbench, an advance and retreat motor corresponding to the rack is provided on the base, and a gear of an output shaft of the advance and retreat motor is meshed and connected with the rack; an advance and retreat guide wheel corresponding to the guide rail is provided on the bottom surface of the workbench, and the advance and retreat guide wheel is arranged on the guide rail;

[0025] A left and right swinging slide rail is arranged on the top of the workbench, a slide seat matching the left and right swinging slide rail is arranged under the swinging table, and the slide seat of the swinging table is arranged on the left and right swinging slide rail; a left and right swinging motor is arranged on the workbench, an eccentric wheel is arranged at the output end of the left and right swinging motor, and the eccentric wheel is swingably connected with the swinging table through a connecting rod.

[0026] Furthermore, in some embodiments, a support seat is provided on the swing table, and the rotating rubber roller is mounted on the swing table through the support seat; the head motor is connected to the end of the head spindle of the polishing wheel through a belt.

[0027] When the workpiece (billiard cue, table tennis cue) reaches the polishing area of ​​the polishing wheel, the cylinder controls the polishing wheel head to drop to the specified height to polish the workpiece product. When the polishing wheel polishes the slender conical workpiece (billiard cue, table tennis cue), due to the irregular shape of the workpiece, the lifting and replenishing motor drives the swing arm to rise and fall through the screw rod, and then the lifting and replenishing motor controls the height of the polishing wheel according to the set trajectory to adapt to the change in the diameter of the front and rear ends of the cue. At the same time, when the polishing wheel is worn, the lifting and replenishing motor drives the head lifting reducer transmission screw to compensate to adjust the adaptable height of the polishing wheel.

[0028] The utility model can polish the surface of a slender and conical workpiece (billiard cue or table tennis cue) to achieve a flat and smooth product surface, improve the polishing quality, and enhance the polishing accuracy and smoothness of the workpiece surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of an embodiment of the utility model;

[0030] Figure 2 This is an exploded schematic diagram of the lower pressing plate portion of the embodiment of the utility model;

[0031] Figure 3 This is a schematic structural diagram of the polishing wheel part of the utility model embodiment;

[0032] Figure 4 This is a schematic diagram of the structure of the lower pressing plate part of the embodiment of the utility model;

[0033] Figure 5 It is a side view schematic diagram of an embodiment of the utility model.

[0034] Description of the main parts markings in the figure:

[0035] Base 11, frame 12, guide rail 13, workbench 14, swing table 15, polishing wheel 16, machine head motor 17, lifting and feeding motor 18, cylinder 19, advance and retreat motor 22, advance and retreat guide wheel 23, rack 24, left and right swing slide rail 25, eccentric wheel 26, rotating rubber roller 32, support seat 37, left and right swing motor 41, machine head spindle 61, swing arm 62, spindle bearing seat 63, swing arm shaft 64, swing arm bearing seat 65, machine head lifting reducer 66, fixed plate 67, lifting seat 68, positioning plate 69, linkage shaft 71, swing plate 72, pressure plate fulcrum shaft 73, pressure plate fulcrum hole 74, lower pressure plate 75, connecting head 76, hinge hole 77, drive seat 78, screw rod 79, cylinder seat 81, screw sleeve 82, workpiece 89. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present utility model, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0038] As shown in the accompanying drawings, the utility model includes a base 11, a frame 12 is provided on the base 11, a guide rail 13 is provided in the middle of the frame 12, and the guide rail 13 is arranged on the base 11; a workbench 14 is provided on the guide rail 13, a swinging table 15 is provided on the workbench 14, a rotating rubber roller 32 is provided on the swinging table 15, a polishing wheel 16 is provided above the rotating rubber roller 32, the polishing wheel 16 is located directly above the rotating rubber roller 32, and the polishing wheel 16 is arranged on the frame 12; a head motor 17 is provided on the frame 12, and the head motor 17 is transmission-connected to the polishing wheel 16.

[0039] Furthermore, in one of the embodiments, a lower pressure plate 75 is provided on the side of the frame 12, and the lower pressure plate 75 is an L-shaped swing plate or an arc-shaped plate. A pressure plate fulcrum hole 74 is provided in the middle of the lower pressure plate 75, and the pressure plate fulcrum hole 74 of the lower pressure plate 75 is sleeved on the pressure plate fulcrum shaft 73, and the pressure plate fulcrum shaft 73 is fixedly set on the frame 12.

[0040] A cylinder 19 is provided on the base 11 , and a connecting head 76 is provided at the end of the piston rod of the cylinder 19 , and the connecting head 76 is connected to one end of the lower pressure plate 75 ; a driving seat 78 is provided at one end of the lower pressure plate 75 away from the connecting head 76 , and the end of the lower pressure plate 75 is rotatably connected to the driving seat 78 .

[0041] A screw rod 79 extending longitudinally is provided on the driving seat 78, and a lifting seat 68 is provided on the upper part of the screw rod 79. The lifting seat 68 is arranged above the driving seat 78. A linkage shaft 71 protruding laterally is provided on the lifting seat 68, and a swing plate 72 is provided on one side of the lifting seat 68 close to the linkage shaft 71, and one end of the swing plate 72 is hingedly connected to the linkage shaft 71.

[0042] A machine head spindle 61 is provided on the polishing wheel 16, and spindle bearing seats 63 are provided at both ends of the machine head spindle 61; a swing arm shaft 64 is provided on one side of the polishing wheel 16 close to the lifting seat 68, and the swing arm shaft 64 is arranged parallel to the machine head spindle 61, and the swing arm shaft 64 is arranged on the frame 12. A swing arm 62 is provided between the spindle bearing seat 63 and the swing arm shaft 64, and one end of the swing arm 62 is fixedly connected to the spindle bearing seat 63, and the other end of the swing arm 62 away from the spindle bearing seat 63 is rotatably connected to the end of the swing arm shaft 64, and the swing arm 62 is fixedly connected to the swing plate 72; that is, the end of the swing plate 72 away from the linkage shaft 71 is fixedly connected to the swing arm 62.

[0043] Further, in one embodiment, a fixing plate 67 is provided on the side of the lifting seat 68 away from the linkage shaft 71, the fixing plate 67 is arranged longitudinally, and the lifting seat 68 is fixedly connected to one end of the fixing plate 67; a positioning plate 69 parallel to the lifting seat 68 is provided on the end of the fixing plate 67 away from the lifting seat 68, and the positioning plate 69 is fixedly connected to the lifting seat 68. A lifting supply motor 18 is provided on the end of the screw rod 79 away from the driving seat 78, and the lifting supply motor 18 is connected to the screw rod 79 through the machine head lifting reducer 66, and the screw rod 79 is arranged on the lifting seat 68 and the positioning plate 69 through.

[0044] Both ends of the swing arm shaft 64 are provided with swing arm bearing seats 65, and the swing arm bearing seats 65 are arranged on the frame 12; the swing arm shaft 64 is mounted on the frame 12 through the swing arm bearing seats 65, and the swing plate 72 and the swing arm 62 are connected with the swing arm shaft 64 as a rotating swing axis.

[0045] The fixing plate 67 is arranged at a certain interval on the outside of the frame 12, that is, the fixing plate 67 and the frame 12 are separated; the end of the screw rod 79 away from the driving seat 78 passes through the lifting seat 68 and the positioning plate 69 and is connected to the head lifting reducer 66.

[0046] Further, in one embodiment, the pressing plate fulcrum hole 74 on the lower pressing plate 75 is arranged between the connecting head 76 and the hinge hole 77, and a spacing is provided between the lifting seat 68 and the driving seat 78. The end of the lower pressing plate 75 away from the connecting head 76 is provided with a hinge hole 77 that matches the convex shaft on the driving seat 78, and the hinge hole 77 is sleeved on the convex shaft of the driving seat 78, and the hinge hole 77 is hingedly arranged with the convex shaft of the driving seat 78.

[0047] Polishing wheel 16 head down pressure working principle:

[0048] When the workpiece 89 reaches the polishing area of ​​the polishing wheel 16, the cylinder 19 lowers the head of the polishing wheel 16 to a specified height to polish the workpiece 89. When the polishing wheel 16 polishes the slender conical workpiece 89 (billiard cue, table tennis cue), due to the irregular shape of the workpiece 89, the lifting and supply motor 18 drives the swing arm 62 to rise and fall through the screw 79, and then the lifting and supply motor 18 controls the height of the polishing wheel 16 according to the set trajectory to adapt to the changes in the diameter of the front and rear ends of the cue.

[0049] When the polishing wheel 16 is worn, the lifting supply motor 18 drives the head lifting reducer 66 transmission screw 79 to compensate to adjust the set pressure of the polishing wheel 16.

[0050] A cylinder seat 81 is provided at one end of the cylinder 19 away from the connecting head 76 . The cylinder 19 is hingedly connected to the cylinder seat 81 , and the cylinder seat 81 is disposed on the base 11 .

[0051] See attached Figure 2 As shown, attached Figure 2 The driving seat 78 shown in the figure is a screw seat structure, the output end of the head lifting reducer 66 is connected to the screw rod 79, the screw rod 79 passes through the positioning plate 69 and the lifting seat 68 and is threadedly connected to the driving seat 78, the driving seat 78 is set as a screw seat, and the screw rod 79 is connected to the positioning plate 69 and the lifting seat 68 through a bearing.

[0052] See attached Figure 4 As shown, attached Figure 4 The structure in which a screw sleeve 82 is provided on the driving seat 78 is shown in the figure. The driving seat 78 is provided with a screw sleeve 82, and the screw sleeve 82 is fixedly connected to the driving seat 78. The screw rod 79 passes through the positioning plate 69 and the lifting seat 68 and is then sleeved in the screw sleeve 82. The screw rod 79 is threadedly connected to the screw sleeve 82, and the screw rod 79 is connected to the positioning plate 69 and the lifting seat 68 through bearings.

[0053] Furthermore, in one of the embodiments, a rack 24 parallel to the guide rail 13 is provided on the side of the workbench 14, an advance and retreat motor 22 matching the rack 24 is provided on the base 11, and the gear of the output shaft of the advance and retreat motor 22 is meshed and connected with the rack 24; an advance and retreat guide wheel 23 matching the guide rail 13 is provided on the bottom surface of the workbench 14, and the advance and retreat guide wheel 23 is arranged on the guide rail 13.

[0054] A left and right swinging slide rail 25 is provided on the top of the workbench 14, and a slide seat matching the left and right swinging slide rail 25 is provided under the swinging platform 15, and the slide seat of the swinging platform 15 is set on the left and right swinging slide rail 25; a left and right swinging motor 41 is provided on the workbench 14, and an eccentric wheel 26 is provided at the output end of the left and right swinging motor 41, and the eccentric wheel 26 is swingably connected to the swinging platform 15 through a connecting rod.

[0055] The left-right swing motor 41 can be arranged on the front part of the workbench 14 or on the rear part of the workbench 14, and the functions and effects achieved are the same.

[0056] Furthermore, in one of the embodiments, a support seat 37 is provided on the swing table 15, and the rotating rubber roller 32 is mounted on the swing table 15 through the support seat 37; the head motor 17 is connected to the end of the head spindle 61 of the polishing wheel 16 through a belt.

[0057] The tail end of the cylinder 19 is hinged to the cylinder seat 81, and the cylinder seat 81 is fixed on the base 11. The piston rod of the cylinder 19 pushes the connecting head 76 to move forward and backward, and the connecting head 76 drives the driving seat 78 (screw seat) on the lower pressure plate 75 to rise or fall, thereby pulling the screw rod 79 to move downward or upward to achieve the rapid rise or fall of the polishing wheel 16. The lifting seat 68 on the upper part of the screw rod 79 is fixed on the swing plate 72, and the front end of the swing plate 72 is connected to the main shaft bearing seat 63 of the polishing wheel 16 head through the swing arm 62 to achieve the rising and falling action of the polishing wheel 16 head. The top of the screw rod 79 is connected to the head lifting reducer 66, and the head lifting reducer 66 is driven by the lifting supply motor 18 to realize the rotation of the screw rod 79, thereby realizing the up and down displacement trajectory of the polishing wheel 16 head.

[0058] The above embodiments only express several preferred implementations of the utility model, and the descriptions thereof are relatively specific and detailed. It should be understood that the utility model is not limited to the forms disclosed herein, and should not be regarded as the exclusion of other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge in the relevant field, and cannot be understood as limiting the scope of the utility model. It should be pointed out that for ordinary technicians in this field, several deformations and improvements can be made without departing from the concept of the utility model. The changes and modifications made by the personnel in this field do not depart from the spirit and scope of the utility model, and all of these belong to the protection scope of the claims attached to the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A head lifting structure of a polishing machine, comprising: A base (11), wherein a frame (12) is provided on the base (11), a guide rail (13) is provided in the middle of the frame (12), and the guide rail (13) is arranged on the base (11); characterized in that a workbench (14) is provided on the guide rail (13), a swing table (15) is provided on the workbench (14), a rotating rubber roller (32) is provided on the swing table (15), a polishing wheel (16) is provided above the rotating rubber roller (32), the polishing wheel (16) is located directly above the rotating rubber roller (32), and the polishing wheel (16) is arranged on the frame (12); A lower pressing plate (75) is provided on the side of the frame (12), a pressing plate fulcrum hole (74) is provided in the middle of the lower pressing plate (75), the pressing plate fulcrum hole (74) of the lower pressing plate (75) is sleeved on the pressing plate fulcrum shaft (73), and the pressing plate fulcrum shaft (73) is fixedly arranged on the frame (12); A cylinder (19) is provided on the base (11), a connecting head (76) is provided at the end of the piston rod of the cylinder (19), and the connecting head (76) is connected to one end of the lower pressing plate (75); a driving seat (78) is provided at one end of the lower pressing plate (75) away from the connecting head (76), and the end of the lower pressing plate (75) is rotatably connected to the driving seat (78); A longitudinally extending screw rod (79) is provided on the driving seat (78), and a lifting seat (68) is provided on the upper part of the screw rod (79); a laterally protruding linkage shaft (71) is provided on the lifting seat (68), and a swing plate (72) is provided on one side of the lifting seat (68) close to the linkage shaft (71), and one end of the swing plate (72) is hingedly connected to the linkage shaft (71).

2. The head lifting structure of a polishing machine according to claim 1, characterized in that: The frame (12) is provided with a head motor (17), and the head motor (17) is drivingly connected to the polishing wheel (16); A machine head spindle (61) is provided on the polishing wheel (16), and spindle bearing seats (63) are provided at both ends of the machine head spindle (61); a swing arm shaft (64) is provided on one side of the polishing wheel (16) close to the lifting seat (68), the swing arm shaft (64) is arranged parallel to the machine head spindle (61), and the swing arm shaft (64) is arranged on the frame (12); A swing arm (62) is provided between the main shaft bearing seat (63) and the swing arm shaft (64), one end of the swing arm (62) is fixedly connected to the main shaft bearing seat (63), the other end of the swing arm (62) away from the main shaft bearing seat (63) is rotatably connected to the end of the swing arm shaft (64), and the swing arm (62) is fixedly connected to the swing plate (72).

3. The head lifting structure of a polishing machine according to claim 1, characterized in that: The lifting seat (68) is arranged above the driving seat (78); a fixing plate (67) is arranged on the side of the lifting seat (68) away from the linkage shaft (71); the fixing plate (67) is arranged longitudinally, and the lifting seat (68) is fixedly connected to one end of the fixing plate (67); A positioning plate (69) parallel to the lifting seat (68) is provided at one end of the fixing plate (67) away from the lifting seat (68), and the positioning plate (69) is fixedly connected to the lifting seat (68); A lifting and replenishing motor (18) is provided at one end of the screw rod (79) away from the driving seat (78). The lifting and replenishing motor (18) is connected to the screw rod (79) through a machine head lifting reducer (66). The screw rod (79) is arranged on the lifting seat (68) and the positioning plate (69) through the screw rod (79).

4. The head lifting structure of a polishing machine according to claim 2, characterized in that: Both ends of the swing arm shaft (64) are provided with swing arm bearing seats (65), and the swing arm bearing seats (65) are arranged on the frame (12); the swing arm shaft (64) is mounted on the frame (12) through the swing arm bearing seats (65); The fixing plates (67) are arranged at a certain interval on the outer side of the frame (12); one end of the screw rod (79) away from the driving seat (78) passes through the lifting seat (68) and the positioning plate (69) and is connected to the machine head lifting reducer (66); A cylinder seat (81) is provided at one end of the cylinder (19) away from the connecting head (76), the cylinder (19) and the cylinder seat (81) are hingedly connected, and the cylinder seat (81) is arranged on the base (11).

5. The head lifting structure of a polishing machine according to claim 1, characterized in that: The end of the lower pressing plate (75) away from the connecting head (76) is provided with a hinge hole (77) matching with the convex shaft on the driving seat (78), the hinge hole (77) is sleeved on the convex shaft of the driving seat (78), and the hinge hole (77) is hingedly connected with the convex shaft of the driving seat (78); The pressing plate fulcrum hole (74) on the lower pressing plate (75) is arranged between the connecting head (76) and the hinge hole (77), and a spacing distance is arranged between the lifting seat (68) and the driving seat (78); The lower pressing plate (75) is an L-shaped swing plate or an arc-shaped plate.

6. The head lifting structure of a polishing machine according to claim 3, characterized in that: The output end of the machine head lifting reducer (66) is connected to a screw rod (79), which passes through the positioning plate (69) and the lifting seat (68) and is threadedly connected to the driving seat (78). The driving seat (78) is set as a screw seat, and the screw rod (79) is connected to the positioning plate (69) and the lifting seat (68) through a bearing.

7. The head lifting structure of a polishing machine according to claim 1, characterized in that: The drive seat (78) is provided with a screw sleeve (82), the screw sleeve (82) is fixedly connected to the drive seat (78), the screw rod (79) penetrates the positioning plate (69) and the lifting seat (68) and is sleeved in the screw sleeve (82), the screw rod (79) is threadedly connected to the screw sleeve (82), and the screw rod (79) is connected to the positioning plate (69) and the lifting seat (68) through a bearing.

8. The head lifting structure of a polishing machine according to claim 1, characterized in that: The side of the workbench (14) is provided with a rack (24) parallel to the guide rail (13); the base (11) is provided with an advance / retract motor (22) matching the rack (24); the gear of the output shaft of the advance / retract motor (22) is meshedly connected with the rack (24); the bottom surface of the workbench (14) is provided with an advance / retract guide wheel (23) matching the guide rail (13); the advance / retract guide wheel (23) is arranged on the guide rail (13); A left-right swinging slide rail (25) is arranged on the top of the workbench (14), a slide seat matching the left-right swinging slide rail (25) is arranged on the bottom of the swinging table (15), and the slide seat of the swinging table (15) is arranged on the left-right swinging slide rail (25); a left-right swinging motor (41) is arranged on the workbench (14), an eccentric wheel (26) is arranged at the output end of the left-right swinging motor (41), and the eccentric wheel (26) is swingably connected to the swinging table (15) through a connecting rod.

9. The head lifting structure of a polishing machine according to claim 1, characterized in that: The swing table (15) is provided with a support seat (37), and the rotating rubber roller (32) is mounted on the swing table (15) through the support seat (37); the head motor (17) is connected to the end of the head spindle (61) of the polishing wheel (16) through a belt.

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